Heel-filing machine



(No Model.) 3 Sheots--Sheet 1;

A. K. WASHBURN.

HEEL FILING MAGHINB. No. 389,994. Patented Sept; 25, 1888.

1- WITNE. E3555- F 'NENTEIR- '0 flfiw/a M 7) %Mc% /%;ML

(No Model.) a Sheets-Sheet 2.

A. K. WASHBURN.

I HEEL FILING MACHINE. No. 389,994. I PatentedSept. 25, 1888.

Can

(No Model.) 3 Sheets-$118M 3.

A. K. WASHBURN.

HEEL FILING MACHINE. No. 389,994. Patented Sept. 25, 1888.

72"? Fig-5- i WITNE-EEEEQ INVENT UNITED STATES PATENT OFFICE.

ALBION K. IVASHBURN, OF BRIDGEWATER, MASSACHUSETTS.

HEEL-FILING MACHINE.

SPECIFICATION forming part of Letters Patent No. 389,994, dated September 25, 1888.

Application filed June 12, 182 8. Serial No. 276,845. (No model.)

To all whom it may concern.-

Be it known that LALBION K. WASHBITRN, of Bridgewater, in the county of Plymouth and State of Massachusetts, have invented a new and useful Improvement in HeelFiling Machines, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to machines for grinding oil the irregular surfaces of heels by the use of abrading wheels or cylinders, the object being to combine with the abrading-cylinder a guard-plate so constructed that the operator can adjust it by simply turning a bolt by hand while the machine is in motion and with the utmost accuracy; also, to add to the machine a device for storing air under great pressure and combining with the same means for projecting at intervals powerful blasts of air onto the abrading-cylinder for the purpose of removing from it the entangled dust and debris that have become lodged in the indentations. These objects I attain by the mechanism shown in the accompanying drawings, in which- Figure l is a front elevation of my machine. Fig. 2 is a side elevation of the same. Figs. 3, 4, and 5 are enlarged views of details.

In Figs. 1 and 2, A represents the main standard of my machine, to which the working parts are attached. This standard, being made hollow, has within it a reservoir for receiving air under pressure from the air-pump and retaining it until wanted.

The main shaft 0, Figs. 1 and 2, of my machine is hung in suitable housings, and has upon one end fast and loose pulleys 0 0 Fig. 1. The shaft 0 has also upon it a drivingpulley, C, which, acting through the belt 0, Figs. 1 and 2, and the pulley H and shaft H, gives motion to the grinding-cylinder H The pulley 0*, also on the shaft 0, acting through the belt 0 pulley D, shaft D, crank-disk D, and crank-pin D, gives motion to the link D and piston-rod P of the pump 1?. (See Fig. 1.)

A revolving blower of any desired style is located at the head of the standard A. The upper end of the standard is enlarged, as indicated at A, Figs. 1 and 2, for the purpose, in connection with the hood A of forming a chamber for the blower. This blower (not shown) is mounted on a shaft, B, and is driven by a pulley, B, which in turn is driven by the shaft 0, acting through the pulley B and belt B The blower-chamber is connected to the inclosed space in which the grinding wheel or cylinder H is placed, (see Fig. 3,) so that any loose dust or debris from the grinding-cylinder H is drawn away and sent through the blower-outlet B, Fig. 2.

To assist the operator in properly presenting the heel to the grinding-cylinder H", I have the following device: K, Figs. 1, 2, and 3, is a face-plate or gage made adjustable and pro vided with an opening at K. K through which the periphery of the grinding-cylinder H projects sufficiently to do its work-that is, to level and smooth the face of the heel, removing all irregularities of surface caused by nails, pegs, or defects in the leather. This gageplate K is attached to the head of the machine by the pivot-rod K about which it can swing. Its lower edge is provided with an ear, K", in which a screw bolt or brace, K is inserted. The screw-bolt K serves to adjust the plate K, as it has ascrew-thread at the end that engages with the ear K, so that by turning the bolt K the plate K may be swung in or out in relation to the grinding-cylinder H. K, Figs. 2 and 3, is a spring attached to the inner side of the gage-plate K and to the head of the machine, and serves to hold the gageplate back against the adjusting screw-bolt K.

It is well known to users of grindingwheels that they soon becomeclogged by the abraded matter from the article being worked upon. To obviate this I havethe following device:

E, Fig. 3, is a hollow cylinder located near the grinding-cylinder H and provided with a long narrow opening, or aseries of openings, that deliver a violent blast of air, so as to impinge on the periphery of the grinding-cylinder H", as indicated by the arrows L. This cylinder E is supplied with air at intervals under pressure, so that the blastonto the grinding-cylinder is violent and powerful enough to free the cylinder from its accumulated dust and abraded matter and thus restore its working qualities. Air under pressure is delivered to the cylinder E through the pipe E, which connects with the reservoir in the standard A, (indicated by dotted lines 1 1' r r, Fig. 2.)

The reservoir above referred to is filled with compressed air by an ordinary air-pump, P, Figs. 1 and 5. This pump has a piston, P", Fig. 5, worked by a piston-rod, P (driven by the device already described,) and is provided with inlet and outlet valves I" P, of ordinary description, and is connected to the reservoir in the standard A by the pipe P P, Fig. 2.

For projecting a blast of air at will against the cylinder H I have a valve (not shown) in the pipe E. (See Figs. 1 and 4.) This valve has a stern, E, Fig. 4, and is operated by a le ver, E". E is a spring attached to the lever E", and serves to keep the valve in E closed when not opened by the operator. When the operator wishes to open the valve in E and thus allow a cleansing blast of air to strike the grinding-cylinder H he has simply to de press the lever E. This, acting through the rod E, (pivoted to the lever E at 15 will draw down the lever E (see Fig. 4) and open the air-valve and allow a blast of air to act on the grinding-cylinder H as desired.

For safety, a safety'valve may be attached to some part of the air-reservoir.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a heel-filing machine, the combination of the grinding or abrading cylinder H with the adjustable gage-plate K, said plate being pivoted at K, and having a tension spring, K, and an adj ustingscrew, K, all operating together substantially as described, and for the purpose set forth.

2. The combination of the grinding or abrading cylinder H with the compressed-air reservoir r 0" r r, air-purnp P, perforated cylinder E", valve E, and lever B, all adapted for projecting at intervals cleansing blasts of air upon the abrading cylinder, substantially as de scribed, and for the purpose set forth.

In testimonywhereoli' I have signed my name to this specification, in the presence of two snbscribing witnesses, on this 11th day of June, A. D. 1888.

ALBION K. WASI-IBURN.

\Vituesses:

FRANK G. PARKER, A. HUN BERRY. 

